A baseball is hit straight up from a baseball bat. A fan observes that the ball was in flight for 3.0s. Find the initial velocity of the ball?
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y = Vit - 0.5 a t^2
the ball is at zero height two times at take-off and landing.
0 = Vit - 0.5(9.8) t^2
0 = t ( Vo - 0.5(9.8)t)
0 = Vo - 0.5(9.8)(3)
Vo = 0.5(9.8)(3)
V0 =14.7m/s
the ball is at zero height two times at take-off and landing.
0 = Vit - 0.5(9.8) t^2
0 = t ( Vo - 0.5(9.8)t)
0 = Vo - 0.5(9.8)(3)
Vo = 0.5(9.8)(3)
V0 =14.7m/s